Vidulk is an AI-powered mobile app for iOS and Android that turns long videos and audio into viral short-form clips. It also includes an AI image studio and professional caption editor.

How does AI clip detection work?

Import a video or paste a link — Vidulk transcribes the audio using AI speech recognition that supports 99 languages, then analyzes the transcript to find the most engaging moments. Each clip is scored by virality potential and categorized as Insight, Story, Funny, Tactical, Controversial, or Emotional.

What languages does Vidulk support?

Vidulk supports speech recognition in 99 languages including English, Spanish, French, German, Korean, Japanese, Chinese, Arabic, Hindi, Portuguese, and many more. The app interface is available in over 30 languages. Language is detected automatically.

What caption and editing features are available?

Vidulk includes 7 caption styles (Highlight, Karaoke, Typewriter, Minimal, Bold Pop, Gradient, and more), customizable fonts, colors, and animations. Export in multiple aspect ratios (9:16 for Shorts/Reels, 1:1 Square, 4:5 Portrait, 16:9 Landscape) at up to 4K resolution.

What is the AI Image Studio?

AI Studio lets you generate thumbnails and images from text prompts with 6 artistic styles including Realistic, Illustrated, Abstract, Minimalist, Anime, and Watercolor. It also includes an Image Enhancer that upscales images 2x or 4x. All processing happens on-device for privacy.

What content types does Vidulk work with?

Vidulk is optimized for podcasts, YouTube videos, interviews, lectures, gaming highlights, vlogs, music, sports, and news content. Import from YouTube, TikTok, Instagram, Twitter/X, Facebook, or upload directly from your camera roll.

Does Vidulk work with long videos?

Yes. Vidulk handles videos of any length. Short videos are processed on-device, while longer videos (over 5 minutes) are processed using server-side AI for faster and more reliable results.

What platforms is Vidulk available on?

Vidulk is available on both iOS (App Store) and Android (Google Play Store). The app interface is available in over 30 languages.

Yes. Video transcription and AI image processing happen on-device. Your videos are not stored on external servers permanently. You can delete your account and all data at any time from the app settings.

Can I use Vidulk for audio-only content like podcasts?

Yes. Vidulk fully supports audio-only content. Import MP3, M4A, WAV, or other audio files. AI detects the best moments and you can add AI-generated background images or choose from 1,200+ built-in backgrounds to create video clips from audio.

Can Vidulk remove captions or subtitles from videos?

Yes. Vidulk includes AI-powered caption removal that automatically detects and removes burned-in captions and subtitles from your videos before clipping. It works best with dynamic/moving captions like those on TikTok, Reels, and YouTube. Enable it with a simple checkbox when importing your video. Processing takes 7-20 minutes and uses additional credits based on video length.

How do I export clips from Vidulk?

After editing, choose your aspect ratio (9:16, 1:1, 4:5, or 16:9), resolution (720p, 1080p, or 4K), and export. Clips are saved directly to your Photos library and can be shared instantly to any platform.

How to Turn OBS Recordings into LinkedIn Clips (Fast & Easy)

To create LinkedIn-ready short clips from OBS recordings, remux your video to MP4, then use Vidulk's AI Clipper app to generate vertical, captioned clips sized for LinkedIn.

OBS Recording to LinkedIn Clips: Quick Guide & Automation

1. Prepare Your OBS Recording for LinkedIn

OBS (Open Broadcaster Software) recordings are often saved as MKV or MP4 files. LinkedIn supports MP4 uploads, so if your OBS file is MKV, remux it to MP4 using OBS's "Remux Recordings" feature for maximum compatibility and full quality.

Go to OBS File > Remux Recordings
Select your MKV file and convert to MP4
Ensure the video is high quality and uncompressed by platforms

2. LinkedIn Video Specs You Need to Know

Max length: 15 minutes per LinkedIn's current support article
Accepted aspect ratios: Any from 1:2.4 to 2.4:1 (vertical 9:16, 4:5, square, landscape all work)
Recommended for vertical: 1080x1920 (9:16) or 1080x1350 (4:5)
Resolution range: 256x144 up to 4096x2304
Captions: LinkedIn auto-generates captions post-upload; you can toggle them on during upload, but they may take time to appear

3. Clip and Reformat with Vidulk’s AI Clipper

Vidulk’s free AI Clipper app (iOS & Android) streamlines the process:

Upload your MP4 OBS recording to the app
Vidulk automatically finds the best moments in your long video
Exports short, vertical clips (9:16 or 4:5), sized for LinkedIn and other platforms
Includes burned-in captions for accessibility and engagement

This automation saves you from manual editing, cropping, and captioning.

4. Uploading Your Clips to LinkedIn

Transfer the finished clips from Vidulk to your computer or use your phone
On LinkedIn, click "Start a post" and then the video icon to upload
Choose your vertical clip (MP4)
Toggle on auto-captions during upload for additional accessibility (optional)
Publish your post; captions may take a few minutes to appear

Your OBS recording is now a LinkedIn-optimized, captioned short clip - ready to drive engagement.

Vidulk's AI clipper (free to start, iOS + Android) finds the best moments in a long video and exports captioned vertical clips sized for the destination.

Try Vidulk

FAQ

How do I convert an OBS MKV recording to MP4 for LinkedIn?

In OBS, use File > Remux Recordings to convert MKV files to MP4. This ensures full compatibility with LinkedIn uploads.

What aspect ratio should LinkedIn clips be?

LinkedIn accepts any ratio from 1:2.4 to 2.4:1. For vertical clips, use 9:16 (1080x1920) or 4:5 (1080x1350) for best results.

Does LinkedIn add captions to uploaded videos?

Yes, LinkedIn can auto-generate captions. Enable this during upload, but note captions may take time to appear after posting.

How does Vidulk automate creating LinkedIn-ready clips?

Vidulk’s AI Clipper finds key moments in your OBS video and exports short, vertical, captioned clips sized for LinkedIn’s requirements.

Can I use Vidulk’s AI Clipper for free?

Vidulk’s AI Clipper is free to start on iOS and Android, allowing you to generate and export clips without upfront cost.